son of John Jacob Holtzapffel (1768-1835);

1827 - joined Holtzapffel & Co, his father's firm, making tools and lathes for ornamental turning;

1838 - published 'A New System of Scales of Equal Parts: Applicable to Various Purposes of Engineering, Architectural and General Science,' as well as the related 'List of Scales of Equal Parts.' ;

1843 - 'Turning and Mechanical Manipulation.' Volume 1, "Materials, Their Differences, Choice, and Preparation; Various Modes of Working Them, Generally Without Cutting Tools,' his father's work published;

1846 - Volume 2, 'The Principles of Construction, Action and Application of Cutting Tools Used by Hand; And Also of Machines Derived from the Hand Tools,' published